What role does WS-Security play in causing a 403 Forbidden error in SoapUI, and how can I fix it?

If the web service uses WS-Security, a 403 Forbidden error can occur if the security tokens (e.g., username token, X.509 certificate) are invalid, expired, or not correctly signed. Ensure your SoapUI WS-Security configuration is accurate, including the correct keystore/truststore paths, aliases, and passwords. Verify the server trusts the certificate used for signing. Inspect the SoapUI logs for detailed WS-Security error messages.